mbed os: using timer - stm32

Question

I am using the board STM32F446RE to run [this project][1]. I am trying to set up and use timer 10 to count. The main.c file is below.
#include "radio.h"
#include <cstdio>
#if defined(SX128x_H)
#define BW_KHZ 200
#define SPREADING_FACTOR 7
#define CF_HZ 2487000000
#define TX_DBM 6
#else
#if defined(SX126x_H)
#define TX_DBM (Radio::chipType == CHIP_TYPE_SX1262 ? 20 : 14)
#else
#define TX_DBM 20
#endif
#define BW_KHZ 125
#define SPREADING_FACTOR 7
#define CF_HZ 915000000
#endif
/**********************************************************************/
EventQueue queue(4 * EVENTS_EVENT_SIZE);
TIM_HandleTypeDef htim10;
static void MX_TIM10_Init(void)
{
/* USER CODE BEGIN TIM10_Init 0 */
/* USER CODE END TIM10_Init 0 */
/* USER CODE BEGIN TIM10_Init 1 */
/* USER CODE END TIM10_Init 1 */
htim10.Instance = TIM10;
htim10.Init.Prescaler = 0;
htim10.Init.CounterMode = TIM_COUNTERMODE_UP;
htim10.Init.Period = 65535;
htim10.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
//htim10.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim10) != HAL_OK)
{
printf("Error Error\r\n");
}
/* USER CODE BEGIN TIM10_Init 2 */
/* USER CODE END TIM10_Init 2 */
}
void tx_test()
{
static uint8_t seq = 0;
Radio::radio.tx_buf[0] = seq++; /* set payload */
Radio::Send(1, 0, 0, 0); /* begin transmission */
printf("sent\r\n");
/* {
mbed_stats_cpu_t stats;
mbed_stats_cpu_get(&stats);
printf("canDeep:%u ", sleep_manager_can_deep_sleep());
printf("Uptime: %llu ", stats.uptime / 1000);
printf("Sleep time: %llu ", stats.sleep_time / 1000);
printf("Deep Sleep: %llu\r\n", stats.deep_sleep_time / 1000);
}*/
}
void txDoneCB()
{
printf("got-tx-done\r\n");
queue.call_in(500, tx_test);
}
void rxDoneCB(uint8_t size, float rssi, float snr)
{
}
void radio_irq_callback()
{
queue.call(Radio::service);
}
const RadioEvents_t rev = {
/* DioPin_top_half */ radio_irq_callback,
/* TxDone_topHalf */ NULL,
/* TxDone_botHalf */ txDoneCB,
/* TxTimeout */ NULL,
/* RxDone */ rxDoneCB,
/* RxTimeout */ NULL,
/* RxError */ NULL,
/* FhssChangeChannel */NULL,
/* CadDone */ NULL
};
int main()
{
printf("\r\nreset-tx ");
Radio::Init(&rev);
Radio::Standby();
Radio::LoRaModemConfig(BW_KHZ, SPREADING_FACTOR, 1);
Radio::SetChannel(CF_HZ);
Radio::set_tx_dbm(TX_DBM);
// preambleLen, fixLen, crcOn, invIQ
Radio::LoRaPacketConfig(8, false, true, false);
MX_TIM10_Init();
HAL_TIM_Base_Start_IT(&htim10);
HAL_Delay(500);
__HAL_TIM_SET_COUNTER(&htim10, 15);
uint16_t timer_val = __HAL_TIM_GET_COUNTER(&htim10);
printf("timer value = %d", timer_val);
queue.call_in(500, tx_test);
queue.dispatch();
}
Basically, I used the initialisation code taken from STM32CubeMX and I configured the clock of timer 10 in the file system_clock.c (normally in STM32CubeMX, clocks are configured in Clock Configuration tab). Then I initialized and started the time before getting the counter from that function. However, all I get from __HAL_TIM_GET_COUNTER is 0.
I want to ask what I did wrong.
Thank you,
Huy Nguyen
[1]: https://os.mbed.com/users/dudmuck/code/simple_tx/

Answer 1

This is purely speculation, but maybe you've not enabled the clock for TIM10. I don't know if that would explain what you are seeing or not. You might need something like __HAL_RCC_TIM10_CLK_ENABLE();